Thought I would start a thread on the EFI swap I am doing. I started about 9 months ago, but felt like I made huge progress today with the wiring.
Some basic (but very necessery) questions about "hot in start" and "hot in run" questions were answered in this thread: http://www.fordmuscleforums.com/ranc...-question.html
I have a 90 Mustang sitting on the side of the house that I was able to get everything I needed from. I pulled the motor and all motor mounted sensors/actuators a while ago. I have an EFI intake and TB, MAF sensor and injectors, TFI dizzy and coil, and engine harness already sitting on a shelf in the garage. They have been out of the Mustang for almost 3 years.
More recently, probably toward the end of last summer, I pulled the EEC, the EEC harness, the EEC relay, fuel pump relay, inertia switch, and BARO sensor. I also pulled the pigtail with the green connector (by the EEC in the Mustang). Im sure there are other odds and ends that I pulled, and there is probably more stuff I still need to pull (like maybe the metal fuel lines up by the motor).
I spent last fall going through the stock Mustang EEC harness. I removed all the smog stuff from the harness (TAD, TAB, EGR, EVR, CANP, AM1, AM2), and the AC circuits. (No pics, but there were pieces of wiring all over the house. The wife was not happy.)
Winter was too busy, although at some point I fabbed up a mounting plate for the EEC. The plate bolts to 2 tabs I welded to the cowl. It is in the middle of the dash, behind the lower dash and below the upper dash. You can see it's location relative to the vent fan box in the pic. Pics were taken with a cell phone and are awful.
Click on the small pic for a full-sized pic.
I dont really have anywhere to put the EEC relay. I figure it is safe tucked up on top of the fan blower motor. You can also see the green connector I referenced above. The green connector has the power circuit for the O2 sensors, the FP monitor line for the EEC, a self test output that will become a CEL, and wires to hook up to the trans for the VSS.
The fuel pump relay, and fuse box are located behind the passenger's side kick panel. The fuse panel will power electric fans, O2 sensors, TFI POWER, and anything else I might need.
The fuse panel gets power from a relay, which gets power from the starter solenoid (battery) and is tripped by the pink wire in the ignition switch. I ran a dedicated 16 ga wire from the ignition switch to the fuse panel relay.
The inertia switch will be mounted behind the pass side of the bench. (The wires are ran to where the inertia switch will go, but it got late and the wife was wondering where I was. I hope to make this connection and the fuel pumps tomorrow morning.) The inertia switch will go in the area circled in red. The battery is also mounted behind the pass side of the bench (in a Taylor battery box that vents to the outside).
The fuel system is not wired up yet, but it is all mapped out. I have a wire run for the low pressure pump. It comes up the driver's side, between the bed and the quarter panel. It comes out behind the drivers side of the bench. I have to connect that and the high pressure fuel pump to one of the white wires in the fuel pump relay pic.
I mounted the high pressure pump and fuel filter/fuel accumulator where the battery used to go. That is why the battery is mounted in the cab. In this pic you can see the keep-alive-power for the EEC connected to the front terminal of the starter solenoid (black wire with orange stripe), and the TFI START wire attached to the "I" terminal (blue wire). You can also see my 3G alternator pigtail and charging wire.